The Chinese Exclusion Act prohibited Chinese immigrants from entering the U.S. based on racism and fear of the Chinese taking their jobs.
The inca's fitted giant stone together without the use of a mortar
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They wanted to expand trade is the true option out of the four, but the true answer is Manifest Destiny. Manifest Destiny is when Americans thought they had the God given right to take up the whole territory of North America.
Rome was built on seven hills at the bank of the tiber river. Rome is around the center of the italian peninsula. Italy had many hills and mountains but were easier to travel over than the mountains on Greece.